<!DOCTYPE html>
<html>
	<head>
		<meta charset="utf-8" />
		<title></title>
	</head>
	<body>
		<ul>
			<li>
				<button id="jsbtn">加载js</button>
			</li>
			<li>
				<button id="btn">运行js</button>
			</li>
			<img id="advertisements" src="../../img/advertisement/advertise1.png" width="800" height="600" />
		</ul>
	</body>
	<script>
		"use strict"
		var addJs = function(){
			var script = document.createElement("script");
			
		}
		
	</script>
</html>